I'm Stuck In Future Where Aliens Enslaved Humans And I Have To Free Humanity To Get Home

What the story is about

Linny Ching is an ordinary worker who discovers he can travel between worlds, but each unfamiliar destination brings new dangers and leaves him searching for a way home. In a technologically advanced future facing an alien threat, his strange arrival draws the attention of authorities and makes him a potential source of knowledge they desperately need.